What it means
A clinician recommends an imaging study, but the patient's plan requires an insurer review before the service is covered under its rules, so staff submit the requested clinical and administrative details. Delay or denial can affect access to care as well as the practice's revenue cycle.
The American Medical Association explains prior authorisation in US practice and US Medicare's CMS describes specific authorisation initiatives, but these are US examples, not a universal scheme for every country or payer; for international businesses, local pre-approval concepts can resemble US prior authorisation but use different terminology and rules. Before submitting, check the current plan, service code and provider network rules, because a similar treatment for another patient may have different requirements, and confirm what information is needed, since missing records can cause avoidable rework.
Document the clinical reason accurately and never change facts to fit a payer criterion. Some urgent situations have separate procedures or exceptions, so follow the current local and payer rules instead of delaying necessary emergency care based on a general glossary definition.
Record the request date, tracking number, decision and validity period, because the team needs these details when scheduling or billing. A request may be approved, denied, pended for more information or redirected to another pathway, so do not collapse all statuses into yes or no.
Check whether the authorisation covers the exact service, units, clinician, facility and date range, since a mismatch can still lead to a claim problem. Prior authorisation is not the same as a referral, and a plan may require one, both or neither.
Do not tell a patient that payer approval guarantees no out-of-pocket charge, because deductibles, coverage and claim processing may still affect the bill, and likewise a clinical recommendation does not mean the insurer must approve payment under its plan rules. Build time into scheduling when a service is not urgent, and give patients a clear, careful status update without promising an insurer decision date that is not confirmed.
If a request is denied, review the stated reason and the available appeal or reconsideration route, as requirements and deadlines vary. Keep a record of documents sent and responses received, which helps when decisions are disputed or a claim is later reviewed.
Watch the authorisation expiry against the actual service date, and if treatment changes, check whether a new approval is required because a prior decision may not cover a different scope. Track approval rates only with a stable denominator, since submitted requests and final decisions are not the same population at one point in time; for example, 470 approved out of 500 decided requests gives a 94% approval rate under that stated rule.
A low rate may reflect incomplete submissions, changed coverage rules or unsuitable requests, while a high rate may hide long delays or administrative burden, so measure turnaround and patient impact too, segment by payer and service type while protecting patient privacy, and avoid duplicate requests that merely lift activity counts. Train clinical and administrative teams to share responsibilities and verify the real policy and patient circumstances before any coverage or care decision, because this entry is a management explanation, not medical or legal advice, and the goal is to support timely care and accurate claims while keeping the payer's review separate from clinical judgement.
In practice
Real-world examples.
Example
A clinic submits an insurer request before a planned scan when the patient's plan requires it. Staff book the appointment only after the decision and validity period are recorded.
Example
An approval covers one facility and date range, so staff check whether a rescheduled service still fits. They find the new date falls outside the validity period and ask the insurer to extend it.
Example
A practice reports 470 approvals from 500 decided requests, a 94% rate under its stated definition. The manager also reports average turnaround time, so a high rate is not read as proof of a smooth process.
Formula
Calculation
Illustrative approval rate = approved requests / requests with a final decision during a stated period x 100. State whether pending and withdrawn requests are excluded.
Worked example. In one quarter a fictional clinic files 540 requests. Of these, 40 are still pending and 500 have a final decision, of which 470 are approved. Approval rate = 470 / 500 x 100 = 94%. If the 40 pending requests were wrongly counted in the denominator, the rate would appear as 470 / 540 x 100 = about 87%, which shows why the stated rule matters.Case study
Seen in the real world.
In this fictional case, Willow Clinic noticed repeat denials for one service after a payer changed its documentation rule. Staff checked current criteria, corrected submission steps and monitored delays and appeals. The case is invented; no real insurer decision is represented.
Watch out
Common mistakes.
- Treating approval as a guarantee of payment.
- Using an authorization for a different service or date range.
- Applying one insurer's policy to all patients and jurisdictions.
Questions
People also ask.
Does every service need prior authorisation?
No. Check the patient's current plan and the service rules.
Does approval guarantee the claim is paid?
No. Other coverage, coding and claim requirements may still apply.
What if a request is denied?
Review the reason and the applicable appeal or reconsideration process.
From the founder's library

Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%